Author and editor Leah McNaughton Lederman was interested in the perspectives of female writers in regards to fear and the things that scare them. She decided to pull together a collection of short work around this theme, and started by inviting writers that she worked with to participate. She also reached out to writers outside of the horror genre and even to unpublished writers so that she could get a wide variety of perspectives and content. What resulted are two collections of very organic and cerebral stories in Café Macabre and Café Macabre II. As an experienced editor, Lederman took on the role of editing the collection. Some writers benefited from her role as a writing coach, while others needed help with developmental editing. Some stories came to her fully formed and only needed light editing or proofreading. She also had the participants peer review each other's work as a part of the editing, to create the "café" feel. In addition, Lederman collaborated with an artist to create illustrations for each story that represent the theme or a pinnacle scene.
You might find this article on anthologies helpful: https://www.authorlearningcenter.com/b/ask-keith/posts/how-do-i-oversee-a-work-that-has-essays-from-contributing-authors
Here are some additional resources: https://www.authorlearningcenter.com/search?q=anthology
I could not really get anything out of what she was saying. Did not help.